When the Corps of Discovery left the vicinity of St. Louis in 1804 to explore the American West, they had only sketchy knowledge of the terrain that they were to cross -- existing maps often contained large blank spaces and wild inaccuracies. William Clark painstakingly mapped every mile of the journey, drawing from both direct observation and from the reports of Indians and a few fur traders. On their return Lewis and Clark directed the execution of new maps detailing with remarkable accuracy the features of the country that they had traversed.

"Sponsored by the Center for Great Plains Studies, University of Nebraska-Lincoln, and the American Philosophical Society, Philadelphia."

Includes bibliographical references.

31930000450172 2003-939a hardcover